Automobile-jack.



C. A. HART.

AUTOMOBILE JACK.

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1,030,728. Patented June 25, 1912.

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CHARLES A. HRT, 0F FINDLAY. OHIO.

AUTOMOBILE-J' ACK.

Specification of Letters Patent.

Patented Juno 25, 191 2.

Application tiled January 18, 1912. Serial No. 671,917.

To all whom it may concern.'

Be it known that L'Cuaumzs A. llaa'r. a citizen of the United States,residing at Findlay, in the county of Hancock and State of Ohio, haveinvented certain new and useful Improvements in Automobilc- Jucks, ofwhich the following is a specification.

This invention relates to jacks and primarily to that type which isoperated by the vehicle passing thereon for automatically elevating thelatter from the ground.

The invention has particular reference to certain im rovements over myprevious aplication terial Number 654,870. In the )ack constituting thesubjectmatter of the application just referred to, it has been foundthat the momentum of the automobile as the lat-ter rides on the jackwill sometimes eause the jack to ass beyond the osition of equilibriumantlbrender said jac i ino erative. ilo overcome this I have mounte aplurality of rollers on the base of the jack, which, should there be anexcess of.

momentum, will cause the jack to move with the vehicle until the latteris stopped.

A further object of the invention has been to provide a peculiarconnection between the base portion of the frame or lifting part of thejack, and certain runners up which the wheels of the vehicle travel inorder that the ljack may engage the axle of the latter in tieelevating,y operation.

With the above and other objects in view this invention consists in theconstruction, combination and arrangement of parts, all as hereinaftermore fully7 described, claimed and illustrated in the accompanying."rdrawings, wherein- Figure 1 is a perspective view of a jack embodyingthe present invention. Fig. 2 is a sido elevation thereof, the dottedline portion illustrating thc vehicle supported on the 'ack. Fig. 3 is afragmentary plan view of t le jack, and Fig. 4 is a fragmentary sideelevation of the connection between the runner and the jack.

Throughout the following detail description and on the several tigurcsof the drawings, similar parts are referred to by like referencecharacters.

In carrying out the present invention a tiltable frame is providedcomprising a pair of vertical standards l held in s mecd relation by theconnecting har and the bases 3 bolted or otherwise secured to thestandard 1, said bases being provided with an auxiliary bearing surface.disposed at an angle from the main hearing surface. When the jack issupported ou the auxiliary bearing surface the former is, in a tiltedposition adapted to receive the axle of the oncoming vehicle. As thevehicle moves on to the standards l the frame is rocked or tilted to avertical position, the latter being supported on the main bearingsurface of the base. Thel upper 0r receiving terminals of the standardsl are capped or provided with the plates 4 which have formed on theirrear terminals integral projections which form stops, to be engaged bythe vehicle axle and thus tilt the base. or fulcrum members until thestandards l. assume a vertical position with the axle elevated. Aterminal of each base 3 is beveled rearwardly and downwardly and saidbase has mounted on the rear end a roller or wheel G. It has been foundby experience that the momentum of heavy cars or vehicles will sometimesoverturn the jack, but in providing the rollers, such as are shown at 6in the drawings, the standards 2 when moved to a vertical position byengagement of the axle of the vehicle will be supported partly by therollers (i. The rollers of course, constitute anti-friction memberswhich, on engafement with the surface upon which the )ack is supported,will ermit of a slight bodily movement of the )ack as the members 2assume a vertical position, and in the event that the vehicle. the axleof which is being engaged and elevated by the jack, is not stoppedimmediately the standards reach such position. The likelihood ofoverturning,r of the jack is thus eliminated bythe provision of saidrollers 6.

The pair of runners 7 are connected to the base members 3 for guidingthe vehicle on to the jack. These runners are peculiarly connected tothe base memhers. each connection comprising a lever S pivoted betweenits terminals to a hase member Il and a linlc member 9 connecting oneterminal of the lever 8 to a runner 7. The opposite or upper terminal ofthe lever S is provided with an arcuate. slot l0 in which is adapted tooperate a pin l1 carried by the hase mem her 3.

lly reference to ["ig. 4, it will be noted that. in the operation ofraising one end of a vehicle, the latter will be moved to cause its rearor front wheels to travel on to the runners 7, the vehicle being thusslightly elevated so as to permit the axle adjacent. to said wheels toengage with the. upper ends of the standards .2 and tilt the standardsinto a vertical position. The aforesaid movement of the standards .2 isaiTorded by a rockingr movement of the base or fulcrum members 3 and as.said members 3 are moved in the manner described, the levers 8 have apivotal movement on the base 3, the upper ends of said levers moving inan are with the pivots of the levers as a center. The movement of thelevers 8 is permitted by the loose or pin and slot connection 11--10above referred to and the connections of which the levers 8 form a partare located substantially at the angle where the main and auxiliarybearing surfaces of the parts 3 meet.

Having thus described the invention, what is claimed as new is:

1. A jack comprising a tiltable frame, a runner, a lever pivoted betweenits ends to the frame and provided with a slot adjacent one terminal, alink connecting the op oste terminal of the lever to the runner, an apin carried bv the frame and operable in the slotin said lever.

2. A jack com rising a tiltable frame .including standart s, basefnlerum members for said standards adapted to support the standards intilted and vertical positions,

runners associated with the base fulcrum members, and connectionsbetween said runners and the fulorum members cach comprising a leverpivoted between its ends to the fulerum member, a loose connectionbetween one end of the lever and its fulcrum member, and a pivotalconnection between the, opposite. end of the lever and the adjacentrunner.

3. A jack comprising a tiltable frame including standards, base fnlcrummembers for said standards, eachlof the latter havinl;Y on its underside main and auxiliary bearingY surfaces extending.r at an angle to oneanother to support the. frame in a tilted or vertical position, runnersassociated with thc fulcrum members to receive thereon the wheels of avehicle, and a connection between each fulcrum member and its adjacentrunner comprising a lever pivoted between its ends to the fulcrum membernear the angle at which its main and auxiliar bearing surfaces meet, aloose connectlon between one end of the lever and its fulcrum member,and a pivotal connection between the opposite end of said lever and theadjacent runner.

In testimony whereof I atiix my signature in presence of two witnesses.

' CHARLES A. HART.

Witnesses:

W'. S. HAMMAKER, C. A. 'Srocmora Copies of this patent may be obtainedfor ve cents each, by addressing the. Commissioner of Patents,Washington, D. C."

